Difference between revisions of "CircuitJS/C3/AND-Gate/English"

Slide 2:

Learning Objective

Slide 3:

Prerequisite

Slide 4:

System Requirement

Slide 5:

About logic gates

AND Gate Circuit.png

Show the diagram

Let us open the circuitjs interface.

Click on File and select New Blank Circuit.

Click on the Draw option

Browse through the menu

Click on the Draw menu at the top.

Go to the Passive Components, then select Add Switch.

Drag and place the switch in the working space.

We will use 2 switches in this circuit.

Right-click on the switch, then select the Duplicate option to make another one.

Connect both switches in series.

In this circuit, these switches act as INPUTs for the AND Gate.

Go to Draw, and select the Add Resistor option.

Drag and draw the resistor as shown.

Place the resistor in series with the switches.

Change the resistor value to 220 Ohms using the Edit option.

Show the path to find the DC power supply and draw it

Now we need a DC Power supply to make the circuit work.

Click on Draw, then go to Inputs and Sources to see a list of components.

Select Add Voltage Source (2-terminal), and drag the DC power supply.

Place it below the switches, as shown in the video

We need an LED to show the output of the circuit.

Click on the Draw menu and go to the Outputs and Labels option and

select Add LED.

Now click and drag to draw the LED in the working space.

Place the LED below the resistor as shown in the circuit.

We have all the required components in the work area.

Now let's connect the components using wires.

Use the Add Text option to label the switches and LED.

Give names to these switches as A and B and to the LED as Y.

Slide:

AND Gate Truth Table.png

This is the truth table for the AND Gate, where A and B are the inputs and Y is the output.

When both the inputs are 1, the AND Gate gives the output as 1.

If any of the inputs in AND gate is zero, the output is zero.

This means, we have to open both switches A and B in the circuit.

Click on the center of the switch to open it.

Now we can see that the output LED is not glowing.

This indicates that the output Y is 0, as given in the truth table.

Thus the first condition is verified.

For the second case, input A is 0 and input B is 1.

To attain this condition in the circuit, keep switch A open and close switch B as shown.

Note that the output LED is not glowing.

This indicates that the output Y is 0, as given in the truth table.

Thus the second condition is verified.

Slide :

Assignment1

Image

As an assignment,

Click on Draw, Go to Logic Gates, Input and Output.

Select Add AND Gate option.

Click and drag the cursor in the working area to draw the AND gate.

Click on Draw, Go to Logic Gates, Input and Output.

Select Add Logic Input option.

Click and drag the cursor in the working area to draw the logic input.

Press the Esc key to deselect the component wherever required.

Right click on the logic input and select the Edit option.

In the pop-up window, check the Numeric box and click on the OK button to save the changes.

By doing this, the input values will be shown in either 0’s or 1’s.

As we require two logic inputs, let us select the Duplicate option.

Now we have two logic inputs.

Connect these logic inputs to the input pins of the AND gate as shown.

Next we will add one logic output to the AND gate.

Now, go to Draw, click on Logic gates, Input and Output.

Then Select Add Logic output and draw it in the working space.

Right click on the logic output and select the Edit option.

In the pop-up window , check the Numeric box and click on the OK button to save the changes.

By doing this, the output value will be shown in either 0’s or 1’s.

Connect the logic output to the output pin of AND Gate.

Use the Add text option to give labels to pins as shown.

Letters A and B are the inputs and Y is the output.

To change the state of the input value from 0 to 1 or vice-versa, click on the input value.

Now click on the input B to make its value 1.

Notice the output value Y is zero.

It implies that if any of the input is zero, the output is zero.

Check the remaining two conditions according to the AND gate truth table.

Slide

Summary

Slide: Assignment 2

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As an assignment,

Slide :

About Spoken Tutorial project

The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

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For more details, please write to us.

This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay.

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